Cubwarden [Ikoria: Lair of Behemoths] Crocodile then attach it to that

then attach it to that creature

Whenever Captain Lannery Storm attacks

Set: Structure Deck: Dragons Collide Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Send the top 3 cards of your Deck to the Graveyard

When Den Protector is turned face up

Set: Galactic Overlord Card type: Equip Spell Rarity: Ultimate Rare Equip only to an Xyz Monster

Cubwarden [Ikoria: Lair of Behemoths] Crocodile then attach it to thatSet: Ikoria: Lair of Behemoths Type: Creature Cat Rarity: Rare Cost: {3}{W} Mutate {2}{W}{W} (If you cast this spell for its mutate cost, put it over or under target non Human creature you own. They mutate into the creature on top plus all abilities from under it.) Lifelink Whenever this creature mutates, create two 1 1 white Cat creature tokens with lifelink.